6444606442 has 8 divisors (see below), whose sum is σ = 9872588736. Its totient is φ = 3153743532.

The previous prime is 6444606433. The next prime is 6444606503. The reversal of 6444606442 is 2446064446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6444606395 and 6444606404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34279728 + ... + 34279915.

It is an arithmetic number, because the mean of its divisors is an integer number (1234073592).

Almost surely, 2^6444606442 is an apocalyptic number.

6444606442 is a deficient number, since it is larger than the sum of its proper divisors (3427982294).

6444606442 is a wasteful number, since it uses less digits than its factorization.

6444606442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68559692.

The product of its (nonzero) digits is 442368, while the sum is 40.

The square root of 6444606442 is about 80278.3061729631. The cubic root of 6444606442 is about 1860.9389834415.

The spelling of 6444606442 in words is "six billion, four hundred forty-four million, six hundred six thousand, four hundred forty-two".